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当前位置: 首页 > 文章 > 上海地区晚麦茬水稻机直播分蘖发生特性及其与群体生产力的关系 上海农业学报 2015 (2) 117-121
Position: Home > Articles > Tillering characteristics and relations between tillering and yield components of machine-sown rice following wheat in Shanghai Acta Agriculturae Shanghai 2015 (2) 117-121

上海地区晚麦茬水稻机直播分蘖发生特性及其与群体生产力的关系

作  者：
顾树平;李刚;张强;沈小燕;袁伟;左京;程婷;沈杰
单  位：
上海光明长江现代农业有限公司;上海市农业技术推广服务中心;光明米业
关键词：
粳稻;麦茬稻;直播稻;播种密度;分蘖;产量
摘  要：
为明确大田生产条件下晚麦茬机直播水稻分蘖特性,以‘武运粳24'为材料,研究不同播种量机直播水稻的分蘖发生率、成穗特点以及对产量构成的关系。结果表明:晚麦茬机械直播水稻第1叶位的分蘖发生率和成穗率都较低,在成穗数的茎蘖组成中占比较小;2—4叶位为分蘖优势叶位,分蘖发生率及成穗率都较高,是成穗数的重要组成部分;水稻分蘖对产量的贡献率与播种密度成反比,4个处理主茎和分蘖对产量的平均贡献率分别为59.44%和40.56%;在所有分蘖成穗叶位中,第2、3、4叶位对产量的贡献率最大,平均贡献率分别为14.38%、12.21%和9.33%,且随着密度的提高,第2、3、4叶位对产量的合计贡献率随之降低;同时,第2、3、4叶位分蘖穗部性状好,更容易创造高产。
译  名：
Tillering characteristics and relations between tillering and yield components of machine-sown rice following wheat in Shanghai
作  者：
GU Shu-ping;LI Gang;ZHANG Qiang;SHEN Xiao-yan;YUAN Wei;ZUO Jing;CHENG Ting;SHEN Jie;Shanghai Bright Changjiang Modern Agriculture CO.,LTD;Shanghai Agricultural Technology Extension and Service Center;Bright Rice(Group) CO.,LTD;
关键词：
Keng rice;;Rice following wheat;;Direct-seed rice;;Seeding density;;Tillering;;Yield
摘  要：
In order to explore the tillering characteristics of mechanical direct-seeding rice after latter wheat in field production,with ' Wuyunjing 24' as experimental materials,the tillers rate,panicle rate and relationship between yield components were investigated by setting special density tests.The results showed that tillers rate and panicle rate of the 1st node were relatively lower,and has smaller proportion in the composition of a tiller spike in share.The main tillering zone was located between the 2nd to 4th node and tillers rate and panicle rate were relatively higher,which was an important part of a spike.The contribution rate of tillering on yield was inversely proportional to the planting density,the average contribution rate of steam and tillering on yield under 4treatments was 59.44%and 40.56%respectively.In all tillers leaf bits,the maximum contribution rate was from the 2nd to 4th node tillers,the average contribution rate were 14.38%,12.21%and 9.33%.respectively.With the increase of density,the 2nd to 4th node tillers for a total contribution of clover-bit output decreased;Meanwhile,the 2nd to 4th node tillers had better panicle traits,which were easier to create higher yield.

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